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WaStop® Access

WaStop Access is a complete solution with WaStop detachable in a chamber for easy operation and maintenance. The solution immediately protects people and properties from flooding and backflow, odor and pests in the stormwater and sewer systems. 

WaStop® Access
Technical specifications

WaStop Access is a complete solution in which WaStop is installed. WaStop is a membrane check valve that is normally closed. WaStop comprises two main components: a conical membrane and a valve unit. The solution is extremely adaptable as regards installation options. Common installations: 

  • inlets and outlets
  • existing pipes

The solution of an access chamber is available standard in DN110-DN160 in a DN425 chamber and Large in DN110-DN315 adjacent. There is also a chamber with descent option: "Access Chamber Large" DN1000 with DN200-DN315 adjacent. We also customize solutions. 


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Drawings and technical specifications

We at Wapro believe in opportunities. By being an open organization, we can learn from our customers and share our experiences. Below you will find all the information about our products and also other useful and interesting information. Contact us if you are missing something.

Nominal Diameter
DN/OD 160
14.00 kg
Max flow (velocity)
2.00 m/s
Max flow (volumetric)
40.00 ls
425.00 mm
Chamber Diameter
425.00 mm
Invert-Ground min.
1250.00 mm
Construction length
740.00 mm
Sealed for one-sided pressure

Martin Widerberg

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Martin Widerberg
Area Sales Manager Europe

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